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Q.

By selling 8 dozen pencils, a shopkeeper gains the selling price of 1 dozen pencils. What is the gain?


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a

1212%

b

1317%

c

1427%

d

8712%  

answer is C.

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Detailed Solution

Given, by selling 8 dozen pencils, a shopkeeper gains the selling price of 1 dozen pencils.
We know that S.P. = C.P. +Gain.
 ⇒S.P. of 8 dozen = C.P. of 8 dozen + S.P. of 1 dozen
 ⇒S.P. of 7 dozen = C.P. of 8 dozen
 ⇒By selling 7 dozen, he gain 1 dozen.
Gain% =  GainC.P×100
Therefore, gain % =17×100%.
⇒ gain% =1427% Hence, option 3 is correct.
 
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